Hot-water heater.



.1. A. .mcmmou. HOT WATER HEATER.

(Application filed May 19, 1902.)

(No Model.)

wait-memes UNITED STATES JOHN A. JACOBSON, OF EVANSTON, ILLINOIS.

HOT-WATER H EATER.

SPECIFICATION forming part of Letters Patent No. 71 1,571, dated October 21, 1902.

Application filed May 19,1902. Serial No. 108,067. {No mcd h;

have invented certain new and useful Im-' provements in Hot-Water Heaters; and I do hereby declare the following to be a full, clear,-and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to heating plants, and more particularly to the class of hot-Water heaters; and it has for its object to provide in a heating system or plant a heater wherein the Water will be heated to the desired temperature with a minimum expenditure offuel and in which there will be an efficient circulation, the parts being so constructed and arranged as to produce an apparatus at a moderate cost and to permit of repairs and substitution of parts without interfering with the brickwork of the heater.

Other objects and advantages of the invention will be understood from the following description.

In the drawings forming a portion of this specification, and in which like numerals of reference indicate similar parts in the several views, Figure 1 is a vertical section taken longitudinally'through the heater. Fig. 2 is a transverse section taken vertically through the fire-box and showing the main header, partly in elevation and partly in section. Fig. 3 is a section on line 3 3 of Fig. 1.

Referring now to the drawings, the present heater consists of a brick casing 5, having a metallic front end portion 6, inwhich are the fire and ash doors 7 and 8, the fire-door 7 opening into the fire-box, which extends from the plate 6 t0 the bridge-wall 9, and on the top of the bridge-wall 9 is arrangeda hollow bridge-casting 10, connected to the end portions of whichare the two series 11 and 12 of Water-tubes. Thetubes of each series 11 and 12 are disposed horizontally one above the other, and at their forward end portions are connected the nipples 13 through the medium of elbows 14, the nipples of the two series extending toward each other and being connected with the columns or headers 15 and 16, respectively.

Above the columns or headers 15 and 16 is arranged the main header 17, with which the upper ends of the columns or headers '15 and 16 are connected through the medium of nipples 1S and 19. From the header 17 leads the pipe 20, through which the water flows to circulate over the building or through the building to be heated. Below the tubes 11 and 12 are the grate-bars 21, which support the fire in the fire-box, and thus the fuel lies in direct contact with the heating-surfaces at all points save the fire-door opening.

Connected to the header 10, at the lower portion thereof, is the return-pipe 22 of the system, and above the pipe 22 are the transverse pipes 23, disposed in pairs and connected at their ends to the pipes 22 by the downwardly-extending nipples 24:.

From each of the pipes 23 there extend upwardly a series of pipes 25, which'connect at their upper ends with horizontal pipes 26, which extend forwardly and connect with the main header 17 at different elevations and between the fire-box and the brick arch 27. The arch 27 extends from the front of the heater to about the plane of the last series of pipes 25, so that the heat and products of combustion from the fire-box will rise until they strike the arch, after which they will pass rearwardlyand longitudinally of the arch and will finally rise above the arch, at the rear end thereof. The space below the arch therefore forms a flue, and above this lower flue, which contains the pipes 26,are two other fines 28 and 29, which are connected at their front ends and also at their rear ends, theopening connecting the rear ends being opened and closed by means of'a damper 30, above which is the smoke-stack'opening or smoke-hole 31, which leads directly from the rear end of the flue 29. When the damper 30 is raised, the smoke and hot gases may pass directly from the flue that contains pipes 26 upwardly past the inner ends of the fines 28 and 29 and through the opening 31.

The roofs of the fines 28 and 29 are formed by the arches 32 and 33, adjacent towhich are the pipes 34 and 35, respectively. The pipes 34 have their rear ends depending and connected to the transverse pipe 36, while the pipes 35 have their rear ends depending and connected to the transverse pipe 37, the pipes 36 and 37 being connected to the vertical pipe box may be forced to traverse the entire system of pipes in the heater when the greatest heating effect is to be produced, or the upper banks of pipes may be practically cut out by opening the damper 30, or a greater or lesser quantity of heat may be caused to flow through 'the fines 28 and 29 by setting the damper 30 in the proper position.

In the front wall of the heater is a clean-out opening 42,which communicates with the commnnicating forward ends of the tines 28 and 29, while through the walls 5 are form ed cleanout openings 43, which communicate with the damper beyond the pipes 22 and with the rear ends of the several fines.

What is claimed is- 1. In a heater a fire-box comprising a header at the rear end thereof having vertical series of horizontal tubes connected with its ends, a drum connected with the front end of each series of tubes, a header above the drums and connected therewith and having an outletpipe connected thereto, a fine leading from above the fire-box, pipes or tubes connected at their forward ends with the main header and connected at their rear ends with the return feed-pipe, spaced flues above the firstnamed flue having pipes therein connected to the return-pipe, a smoke-opening at the rear ends of the flue and means for connecting the first-named flue directly with the smoke-openmg.

2. A heater comprising a fire-box including a header at the inner end thereof having vertical series of pipes connected thereto, a drum connected with the front ends of each series of pipes, a header connected to the upper ends of the drums and disposed thereabove and having an outflow-pipe connected thereto, a return-flow pipe connected to the first-named header, a fiue leading from the fire-box, pipes disposed in said fine and connected to the second header and the return-flow pipe, vertically-spaced flues above the first-named flue, pipes in said fines connected with the outflowpipe and the return-flow pipe, and a stack with which the fines are connected.

In testimony whereof I aflix my signature in presence of two witnesses.

JOHN A. JACOBSON. Vitnesses:

GEO. H. LAING, ANDREW NUTTALL. 

